From mboxrd@z Thu Jan 1 00:00:00 1970 From: Divy Le Ray Subject: [PATCH 14/11] cxgb3 - CQ context operations time out too soon. Date: Wed, 22 Aug 2007 23:38:12 -0700 Message-ID: <20070823063812.30222.43697.stgit@speedy5> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, swise@opengridcomputing.com To: jeff@garzik.org Return-path: Received: from stargate.chelsio.com ([12.22.49.110]:18377 "EHLO stargate.chelsio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758838AbXHWGiP (ORCPT ); Thu, 23 Aug 2007 02:38:15 -0400 Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Divy Le Ray Currently, the driver only tries up to 5 times (5us) to get the results of a CQ context operation. Testing has shown the chip can take as much as 50us to return the response on SG_CONTEXT_CMD operations. So we up the retry count to 100 to cover high loads. Signed-off-by: Divy Le Ray --- drivers/net/cxgb3/t3_hw.c | 19 +++++++++++-------- 1 files changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c index 9358959..8f6efdb 100644 --- a/drivers/net/cxgb3/t3_hw.c +++ b/drivers/net/cxgb3/t3_hw.c @@ -1867,6 +1867,8 @@ void t3_port_intr_clear(struct adapter *adapter, int idx) phy->ops->intr_clear(phy); } +#define SG_CONTEXT_CMD_ATTEMPTS 100 + /** * t3_sge_write_context - write an SGE context * @adapter: the adapter @@ -1886,7 +1888,7 @@ static int t3_sge_write_context(struct adapter *adapter, unsigned int id, t3_write_reg(adapter, A_SG_CONTEXT_CMD, V_CONTEXT_CMD_OPCODE(1) | type | V_CONTEXT(id)); return t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY, - 0, 5, 1); + 0, SG_CONTEXT_CMD_ATTEMPTS, 1); } /** @@ -2072,7 +2074,7 @@ int t3_sge_enable_ecntxt(struct adapter *adapter, unsigned int id, int enable) t3_write_reg(adapter, A_SG_CONTEXT_CMD, V_CONTEXT_CMD_OPCODE(1) | F_EGRESS | V_CONTEXT(id)); return t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY, - 0, 5, 1); + 0, SG_CONTEXT_CMD_ATTEMPTS, 1); } /** @@ -2096,7 +2098,7 @@ int t3_sge_disable_fl(struct adapter *adapter, unsigned int id) t3_write_reg(adapter, A_SG_CONTEXT_CMD, V_CONTEXT_CMD_OPCODE(1) | F_FREELIST | V_CONTEXT(id)); return t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY, - 0, 5, 1); + 0, SG_CONTEXT_CMD_ATTEMPTS, 1); } /** @@ -2120,7 +2122,7 @@ int t3_sge_disable_rspcntxt(struct adapter *adapter, unsigned int id) t3_write_reg(adapter, A_SG_CONTEXT_CMD, V_CONTEXT_CMD_OPCODE(1) | F_RESPONSEQ | V_CONTEXT(id)); return t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY, - 0, 5, 1); + 0, SG_CONTEXT_CMD_ATTEMPTS, 1); } /** @@ -2144,7 +2146,7 @@ int t3_sge_disable_cqcntxt(struct adapter *adapter, unsigned int id) t3_write_reg(adapter, A_SG_CONTEXT_CMD, V_CONTEXT_CMD_OPCODE(1) | F_CQ | V_CONTEXT(id)); return t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY, - 0, 5, 1); + 0, SG_CONTEXT_CMD_ATTEMPTS, 1); } /** @@ -2169,7 +2171,7 @@ int t3_sge_cqcntxt_op(struct adapter *adapter, unsigned int id, unsigned int op, t3_write_reg(adapter, A_SG_CONTEXT_CMD, V_CONTEXT_CMD_OPCODE(op) | V_CONTEXT(id) | F_CQ); if (t3_wait_op_done_val(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY, - 0, 5, 1, &val)) + 0, SG_CONTEXT_CMD_ATTEMPTS, 1, &val)) return -EIO; if (op >= 2 && op < 7) { @@ -2179,7 +2181,8 @@ int t3_sge_cqcntxt_op(struct adapter *adapter, unsigned int id, unsigned int op, t3_write_reg(adapter, A_SG_CONTEXT_CMD, V_CONTEXT_CMD_OPCODE(0) | F_CQ | V_CONTEXT(id)); if (t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, - F_CONTEXT_CMD_BUSY, 0, 5, 1)) + F_CONTEXT_CMD_BUSY, 0, + SG_CONTEXT_CMD_ATTEMPTS, 1)) return -EIO; return G_CQ_INDEX(t3_read_reg(adapter, A_SG_CONTEXT_DATA0)); } @@ -2205,7 +2208,7 @@ static int t3_sge_read_context(unsigned int type, struct adapter *adapter, t3_write_reg(adapter, A_SG_CONTEXT_CMD, V_CONTEXT_CMD_OPCODE(0) | type | V_CONTEXT(id)); if (t3_wait_op_done(adapter, A_SG_CONTEXT_CMD, F_CONTEXT_CMD_BUSY, 0, - 5, 1)) + SG_CONTEXT_CMD_ATTEMPTS, 1)) return -EIO; data[0] = t3_read_reg(adapter, A_SG_CONTEXT_DATA0); data[1] = t3_read_reg(adapter, A_SG_CONTEXT_DATA1);